Authors / CoAuthors
Meixner, A.J.
Abstract
The Tanami 3D model is a crustal scale model that integrates geological mapping with seismic interpretation and gravity modelling in order to enhance our understanding of the 3D architecture of the region. The Tanami region is a multiply deformed Palaeoproterozoic terrain consisting of the predominantly turbiditic Tanami Group, the volcanically derived sedimentary and extrusive rocks of the Ware Group and the Mount Charles Formation. The region is thought to be underlain by Archaean age basement, was intruded by numerous granitoid bodies during the period 1820-1790 Ma and hosts the Callie world-class and several smaller gold deposits. The 2005 Tanami seismic survey consisted of four regional traverses. Interpreted sections show the presence of a series of crustal-penetrating structures, that appear to be fundamental to the evolution of the Tanami region. A number of these interpreted structures appear to link the mid-crust to `thin-skinned" structures within the uppermost crust. The seismic also shows the presence of a southeast-dipping suture and associated pop-up structure, that separates the Tanami crust from the Arunta crust. Known ore deposits are all located in close proximity to these interpreted through-going thrust faults and the associated ramp anticlines. Gravity modelling of the southeast-trending backbone seismic traverse supports the seismic interpretation. The current 3D model was constructed using 3D GeoModeller; with the seismic data, modelled gravity, interpreted magnetic and gravity data and geological mapping. The 3D model forms the basis of the Tanami X3D, web viewing tool, which allows the model and associated data to be viewed and manipulated over the web.
Product Type
nonGeographicDataset
eCat Id
65438
Contact for the resource
Custodian
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- External PublicationConference Paper
- ( Theme )
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- geophysics
- ( Theme )
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- seismics
- ( Theme )
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- model
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- AU-NTAU-WA
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2007-01-01T00:00:00
Creation Date
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Maintenance Information
unknown
Topic Category
geoscientificInformation
Series Information
Lineage
Unknown
Parent Information
Extents
[-22.0, -18.0, 128.0, 132.0]
Reference System
Spatial Resolution
Service Information
Associations
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Source Information
Source data not available.